AQA A Level Physics復(fù)習(xí)筆記6.3.1 Damping
Damping In practice, all oscillators eventually stop oscillating Their amplitudes decrease rapidly, or gradually This happens due to?resistive forces, such as friction or air resistan...
AQA A Level Physics復(fù)習(xí)筆記6.2.8 Required Practical: Investigating SHM
Required Practical: Investigating SHM Equipment List Resolution?of measuring equipment: Stopwatch = 0.01 s Metre Ruler = 1 mm SHM in a Mass-Spring System The overall aim of this exper...
AQA A Level Physics復(fù)習(xí)筆記6.2.7 Energy in SHM
Energy in SHM During?simple harmonic motion, energy is constantly exchanged between two forms: kinetic and potential The potential energy could be in the form of: Gravitational potential ene...
2023年A-Level考試將迎重大改革！
A-Level考試改革已經(jīng)傳了很久，這一次動(dòng)真格了！英國學(xué)生辦公室(OfS)已經(jīng)制定了一項(xiàng)新的入學(xué)制度，該制度可能取消A-Level預(yù)估分（predicted result）的使用。取消預(yù)估分意味著，學(xué)生需要先拿到A-Level實(shí)考成績以...
AQA A Level Physics復(fù)習(xí)筆記6.2.6 Harmonic Oscillators in Context
Harmonic Oscillators in Context Any oscillations about an equilibrium where its restoring force is proportional to its displacement will be simple harmonic This doesn’t apply just to pendulu...
AQA A Level Physics復(fù)習(xí)筆記6.2.5 Period of Simple Pendulum
Period of Simple Pendulum A simple pendulum is another type of simple harmonic oscillator The pendulum consists of a string and a bob (a weight, generally spherical) at the end The?ti...
AQA A Level Physics復(fù)習(xí)筆記6.2.4 Period of Mass-Spring System
Period of Mass-Spring System A mass and spring system is a type of simple harmonic oscillator The?time period?of a mass-spring system is given by: Where: T?= time period (s) m?= mass (kg) k?...
AQA A Level Physics復(fù)習(xí)筆記6.2.3 Calculating Maximum Speed & Acceleration
Maximum Speed The speed?v?of an oscillator will vary in SHM. It is: Maximum?at the?equilibrium?position (x?= 0) Zero?at the?amplitude?(x = A) The maximum speed,?vmax, is given by the equatio...
AQA A Level Physics復(fù)習(xí)筆記6.2.2 SHM Graphs
SHM Graphs The displacement, velocity and acceleration of an object in?simple harmonic motion?can be represented by graphs against time All undamped SHM graphs are represented by?periodic fu...
